MIL-T-62021 Trucks, Pipe And Sewer Cleaner: High Pressure Water Jet Type, 5680 Liter 1,500 Gallon, 12 700 Kilograms 28,000 Pounds Gvw, 4X2, Modified CommercialThis specification covers diesel and gasoline engine driven, four-wheel, two-rear-wheel drive, 5680 liter L 1,500 gallon, high pressure water jet, pipe and sewer cleaner modified commercial trucks having a gross vehicle weight GVW of 12700 kilograms kg 28,000 pounds, for normal operating conditions. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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MIL-T-62021E(AT)

(w) (x)

Bias ply tires, if required (see 3.4.10.1). Low profile tires, if required (see 3.4.10.1).

(y)

Carrier for a spare wheel or rim and tire assembly if required (see 3.4.10.3).

(z)

(aa)

Spare wheel or rim, if required (see 3.4.10.4).

Mounted spare tire, if required (see 3.4.10.5).

(ab)

(ac)

Trailer brake control system, if required (see 3.4.11.2).

Brake control from a towing vehicle, if required (see 3.4.11.2.1).

(ad)

(ae)

Tilt cab, if required (see 3.4.12).

Individual adjustable driver's and passenger seats, if required (see 3.4.12).

(af)

(ag)

Intermittent windshield wipers, if required (3.4.14).

Tools, if required (see 3.4.16.1).

(ah)

(ai)

Remote control curbside rearview mirrors, if required (see 3.4.20).

Heated rearview mirrors, if required (see 3.4.20).

(aj)

(ak)

An air horn, in addition; if required (see 3.4.21).

AM/FM radio, if required (see 3.4.23).

(al)

Cooling system protection down to -54°C (-65°F), if required (see 3.4.24.1).

* 6.3 Performance prediction. SAE Truck Ability Prediction Procedure computations and computations for low speed and maximum geared speed will be required by the contractor. The SAE Work Sheet Item 1 should include vehicle model number and engine model number. Unless other conditions are cited in the contract, computations should be made for normal atmospheric pressure, normal ambient air temperature, and still, dry, air. The factors to be used in predicting truck ability (see 3.3.1.1) are established as follows for the corresponding SAE Truck Ability Prediction Procedure Tables:

	Table 1	- Tire factor. This factor must relate to the size of the tires furnished by the contractor in accordance with this
	Table 2	specification. - Altitude factor. 1.00
*	Table 3 Table 4	- Rolling factor. 1.613 - Area factor. 0.173; for truck tractors use 0.225.
	Table 5 Table 6	- Velocity factor. 250.00 - Altitude factor. 1.00.
	Table 7	- Chassis Friction Horsepower. Use applicable power unit GVW (to nearest, higher 454 kg (1,000 pounds)) and the
		engine rpm (to nearest 100 revolutions) which is required for 80 km/h (50 mph) geared speed. For GVW and engine
		speed beyond the range of this table, factors shall be xtrapolated.
	Table 8 Table 8A	- Grade Factor. 0.75. - Correction Factor. Not required.
	Table 9	- Road Factor. 0.0.